Police are looking for the shooter while school administrators are working to calm the fears of students on campus.

The man's body was found Saturday morning at the bus stop at Cullen near Holman, close to the Hofheinz Pavilion. We are told that a student actually found the body and called 911.

The victim was apparently asleep at the bus stop when, for an unknown reason, someone shot the man once in the head. Police believe the man was homeless based on his appearance: a white man in his 50s or 60s with straggly hair, dirty fingernails and shoes with no laces.

Police do not suspect a robbery, so the motive for the shooting is still unclear.

Tragically, this happened just as students from across the state of Texas were showing up to UH for a track meet that took place less than a block from the crime scene. Some students said they actually saw the man's body lying in the bus stop.

"I am concerned because you don't know if it was random or if it was a specific target. So it's sad to know that you're at school and you have to keep looking over your shoulder," said student Carla Dixon, who catches the bus at the same stop where the murder took place.

We are told the University of Houston has more than 400 cameras on the campus. Police are analyzing the footage from those cameras to see if they can develop any leads.

If you have any information about this shooting, you are urged to call the Houston Police Department's homicide division at 713-308-3600.

The University of Houston sent a message out to faculty and students about the incident which read, "We have an emergency communication system in place that, when necessary, allows us to alert our campus community rapidly and reliably. This recent death was not a case of having an 'active shooter' on our campus, but if it had been, we have already implemented a very specific program to respond to any such incident."